US 8,543,207 B2 · MRI operation modes for implantable medical devices

Abstract

One embodiment of the present invention relates to an implantable medical device (“IMD”) that can be programmed from one operational mode to another operational mode when in the presence of electro-magnetic interference (“EMI”). In accordance with this particular embodiment, the IMD includes a communication interface for receiving communication signals from an external device, such as a command to switch the IMD from a first operation mode to a second operation mode. The IMD further includes a processor in electrical communication with the communication interface, which is operable to switch or reprogram the IMD from the first operation mode to the second operation mode upon receiving a command to do so. In addition, the IMD includes a timer operable to measure a time period from when the processor switches the IMD to the second operation mode. In accordance with this aspect of the invention, the processor is in electrical communication with the timer, and is further operable to switch the IMD from the second operation mode back to the first operation mode when the measured time period reaches a predetermined time period.

Claims20

Dependent claims

A method for operating an implantable medical device (IMD) in the presence of a magnetic resonance imaging (MRI) system, the IMD including a sensor operable to sense MRI electromagnetic fields, the method comprising:

programming the IMD with an external device from a non-MRI mode, in which the sensor is inactive, to an MRI mode, in which the sensor is active, outside the presence of the MRI system;
and
switching the IMD from a first operation mode to a second operation mode when the sensor detects an MRI electromagnetic field.

Dependencies are inferred from the claim text.

MRI operation modes for implantable medical devices

Life of this patent

MRI operation modes for implantable medical devices

Life of this patent

Abstract

Claims20